[ips-sf] IPS Summary Forecast for 08 November - issued 0018UT/08-Nov-2015

rwc rwc at ips.gov.au
Sun Nov 8 11:18:24 EST 2015

The solar activity was at very low levels over the last 24 hrs. The
partial halo CME associated with M3.7 flare from Nov 04/1352 UT had
arrived at Earth near the anticipated time. As a result, the solar
wind peaked to 720 km/s at 07/0300 UT. The IMF Bz at the time of peak
solar wind speed was strongly southward, near -10 nT and remained
southward for at least 10 hours. The combination of strong solar wind
speed and favourable IMF Bz lead to a major geomagnetic storm at Earth
during the past 24 hrs. Soon, a very wide recurrent positive northern
coronal hole is expected to approach geoeffective position on the
solar disk late on UT day Nov 8. The two day outlook of generally
active conditions and strong solar winds due to continued CME effects
and the onset of the coronal hole. Aurora sightings are possible
during the local night of 8-9 Nov from Southern Australian regions,
such as Tasmania and Victoria. Conditions for HF radio wave
propagation are degraded and is expected to remain depressed over the
next two days.

Space Weather Services              email: asfc at ips.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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